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  1. #1
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    Audi A8 3.0 TDI MPG Average

    It would be useful to know what A8 3.0 TDI owners are getting for their combined MPG.

    Please post figures below.

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    Re: Audi A8 3.0 TDI MPG Average

    2008 ASB 3.0 TDi in a A6

    14-19mpg around town

    combined usually 23-27mpg

    motorway 29-34 (maybe 36 at a push)

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    Re: Audi A8 3.0 TDI MPG Average

    2006 ASB A8L
    The last 3 months have given just 25mpg combined on the computer.
    I am getting 17mpg on the computer as my daily commute in Nottingham has recently been made horrendous by the council Trots' tram retrofit works.
    At night, I get 27mpg on the same route.
    Nottingham to Kensington London door to door yields about 36mpg.
    I recently fitted new injectors, and we are going to Kensington tomorrow, so will test the mpg again.
    ***EDIT**** was 33mpg but we went to Wembley, then up to Ealing and then home, so I think 36mpg is about right for door to door.
    Engine never got above 70˚c though which can't help mpg in this weather. Still trying to fathom out why.
    Last edited by snapdragon; 09-12-2012 at 08:03 PM.
    Audi A8L- 2006 - 3.0TDI

  4. #4
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    Re: Audi A8 3.0 TDI MPG Average

    Running around town I am getting 21-23, on the motorway 33-36, I suppose it would increase at a steady 70mph.

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    Re: Audi A8 3.0 TDI MPG Average

    A8 3.0 TDI 2007 from new, filled to the top every time and recorded the mileage, some towing, town and motorway mostly easy driving but have pushed from time to time, 37.17 MPG over 39K miles.

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    Re: Audi A8 3.0 TDI MPG Average

    Quote Originally Posted by Bob Holmes View Post
    37.17 MPG over 39K miles.
    WOW! I like ...


    @A8starr I have an A6 3.0 TDi Avant 2005, 81K on clock, engine code BMK, very early injectors rev "S" .... you can see my data my clicking the fuelly badge in signature...
    OCD VAG Owner ....

    Kudos to KeithUK for a great DTC app Link:- http://www.vwaudiforum.co.uk/forum/s...II-Error-Codes


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    Re: Audi A8 3.0 TDI MPG Average

    a8 (Audi A8 Quattro) | Fuelly

    30.5mpg ave. I would say its 50% motorway, 50%sitting in traffic.

  9. #8
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    Re: Audi A8 3.0 TDI MPG Average

    Quote Originally Posted by Bob Holmes View Post
    A8 3.0 TDI 2007 from new, filled to the top every time and recorded the mileage, some towing, town and motorway mostly easy driving but have pushed from time to time, 37.17 MPG over 39K miles.
    Tell us your secret!? What fuel do you use? Do you recall what MPG you get for a short trip with a cold engine?

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    Re: Audi A8 3.0 TDI MPG Average

    Quote Originally Posted by a8starr View Post
    Tell us your secret!? What fuel do you use? Do you recall what MPG you get for a short trip with a cold engine?
    No secret, only do this to keep an eye on the engine and pick up early if things are not as they should be, have noticed that the MPG did get better once the engine had done a few thousand miles. I have tried all sorts of fuel including several consecutive tanks of Vpower, this made no difference what so ever on this engine although I do used Vpower all the time on other engines. Some figures do look a little low and others a little high, I put this down to the fact I always fill to the top but not all forecourts are level, consecutive low readings are always when I have been towing. Do not see much difference between long and short trips. Snapdragon notes a temperature of 70, not sure what it should be but mine always sits at 90 getting there in just a few miles. Hope this is of some use.

    Miles Miles Per Tank Miles Per Gall
    0 New 21339 712 40.44
    345 345 34.41 22174 835 39.12
    996 651 35.52 22742 568 36.18
    1663 667 36.18 23293 551 37
    2144 481 34.13 23940 647 36.9
    2797 653 34.83 24643 703 36.84
    3357 560 32.68 24960 317 32.73
    3836 479 31.44 25461 501 35.72
    4399 563 35.53 26255 794 43.61
    5047 648 34.53 26959 704 39.22
    5653 606 34.86 27660 701 36.46
    6323 670 37.59 28202 542 38.1
    7075 752 41.67 28890 688 38.45
    7788 713 37.4 29243 353 37.79
    8483 695 37.15 29520 277 37.16
    8608 125 32.2 30029 509 34.34
    9051 443 38.71 30502 473 35.06
    9771 720 38.6 31039 537 40.8
    10356 585 35.92 31535 496 35.22
    10874 518 34.83 31986 451 34.68
    11603 729 39.44 32430 444 40.21
    12243 640 37.87 33095 665 36.42
    12972 729 40.05 33744 649 37.45
    13581 609 37.91 34402 658 34.58
    14367 786 39.96 35077 675 37.74
    14962 595 38.56 35652 575 43.98
    15566 604 37.6 35990 338 40.85
    16241 675 36.08 36672 682 39.78
    16908 667 35.95 36998 326 39.33
    17522 614 34.44 37436 438 38.06
    18039 517 36.71 38097 661 42.98
    18816 777 34.05 38259 162 41.71
    19300 484 31.97 38738 479 35.11
    19961 661 36.45 39415 677 39.96
    20627 666 38.27 Average 37.17

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  12. #10
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    Re: Audi A8 3.0 TDI MPG Average

    Quote Originally Posted by a8starr View Post
    Tell us your secret!? What fuel do you use? Do you recall what MPG you get for a short trip with a cold engine?
    Reading other posts got me to look at my MPG a little closer; I turned on the car’s computer for average and currant MPG, filled to top with ASDA ( not the best stuff but I think this engine would burn chip oil and still run well ) reset the computer. Did 50/50 town and A roads, filled to the top at the same pump, parking on the same spot as last time, 62.75 litres, 465 miles, 4.54609 litres per gal, = 33.69 MPG, 40 or so cold starts, no sitting in traffic, driver only.
    This time 10% town 20% A roads 70% Motorway filled to the top at the same pump, parking on the same spot as last time, 74.96 litres, 672 miles, 4.54609 litres per gal, = 40.75 MPG. 4 cold starts, no sitting in traffic, two up plus luggage.
    Looking at the current consumption while driving just scars the sh** out of me, just made me accelerate and drive slower, so I turned it off, ignorance is bliss.
    Looking at the average consumption, each time I started the car it changed and did not fit in with what I actually got from the car fill to fill, are you guys using the car to give you these low MPG figures?
    And for Snapdragon I did look at the temperature again, cold engine, 5 deg outside, 2.5 miles made 70 deg and 90 Deg after another 2.5 miles driving at 30/45 miles per hour.

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